Parliamentary debates are beneficial political environments to study using discourse analysis and discursive psychology. However, there is limited discursive psychological research analysing arguments for and against the possibility of a second referendum concerning the UK’s EU membership status. We collected our data by transcribing a parliamentary debate where politicians discussed a second referendum and analysed it using a discursive psychological framework. Whether they supported leave or remain, politicians discredit their opposing position for supposedly lacking democratic values. As such, politicians portrayed their stances on Brexit as a requirement to uphold democratic principles. The main implication of the analysis demonstrated that politicians defined democracy depending on the positions they took regarding calls for a second Brexit referendum. The present study contributes to the growing discursive literature on Brexit discourse by showing how the meaning of democracy is contested and used as a tool to manage accountability.